#include<iocc2530.h>
#define uint unsigned int
#define uchar unsigned char
#define LED1 P1_0
uchar h = 1;

void InitLED(void)
{
  P1SEL &=~0X01;
  P1DIR |=0X01;
  LED1 =0;
}

void InitT1(void)
{
  T1CTL |= 0X01;//一分频，自由计数模式，2-3为分频，0-1为计数模式
  PERCFG = 0X40;
  P1SEL |= 0X01;
  T1CCTL2 |= 0X64;
  T1CC2L |=0XFF;
  T1CC2H |=h;
}

main()
{
  InitLED();
  InitT1();
  uchar flag=0;
  while(1)
  {
    if((T1STAT & 0X04) >0)
    {
      T1STAT &=0xfb;
  if(flag==1)
    h++;//变亮
  else
   h--; //变弱
  T1CC2L =0XFF;
  T1CC2H =h;
  if(h >=254)
    flag=0;
  if(h==0)  
    flag =1;
    } 
  }
}